A comparative analysis reveals weak relationships between ecological factors and beta diversity of stream insect metacommunities at two spatial levels

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dc.contributor.authorHeino, Janien_ZA
dc.contributor.authorMelo, Adriano S.en_ZA
dc.contributor.authorBini, Luis Mauricioen_ZA
dc.contributor.authorAltermatt, Florianen_ZA
dc.contributor.authorAl-Shami, Salman A.en_ZA
dc.contributor.authorAngeler, David G.en_ZA
dc.contributor.authorBonada, Nuriaen_ZA
dc.contributor.authorBrand, Ceciliaen_ZA
dc.contributor.authorCallisto, Marcosen_ZA
dc.contributor.authorCottenie, Karlen_ZA
dc.contributor.authorDangles, Olivieren_ZA
dc.contributor.authorDudgeon, Daviden_ZA
dc.contributor.authorEncalada, Andreaen_ZA
dc.contributor.authorGothe, Emmaen_ZA
dc.contributor.authorGronroos, Miraen_ZA
dc.contributor.authorHamada, Neusaen_ZA
dc.contributor.authorJacobsen, Deanen_ZA
dc.contributor.authorLandeiro, Victor L.en_ZA
dc.contributor.authorLigeiro, Rapaelen_ZA
dc.contributor.authorMartins, Renato T.en_ZA
dc.contributor.authorMiserendino, Maria Lauraen_ZA
dc.contributor.authorRawi, Che Salmah Mden_ZA
dc.contributor.authorRodrigues, Marciel E.en_ZA
dc.contributor.authorRoque, Fabio de Oliveiraen_ZA
dc.contributor.authorSandin, Leonarden_ZA
dc.contributor.authorSchmera, Denesen_ZA
dc.contributor.authorSgarbi, Luciano F.en_ZA
dc.contributor.authorSimaika, John P.en_ZA
dc.contributor.authorSiqueira, Tadeuen_ZA
dc.contributor.authorThompson, Ross M.en_ZA
dc.contributor.authorTownsend, Colin R.en_ZA
dc.date.accessioned2017-03-30T11:47:28Z
dc.date.available2017-03-30T11:47:28Z
dc.date.issued2015-02-23
dc.descriptionCITATION: Heino, J. et al. 2015. A comparative analysis reveals weak relationships between ecological factors and beta diversity of stream insect metacommunities at two spatial levels. Ecology and Evolution, 5(6):1235–1248, doi:10.1002/ece3.1439.
dc.descriptionThe original publication is available at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2045-7758
dc.description.abstractThe hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets, and no such study has focused on stream insects. We first assessed how well variability in beta diversity of stream insect metacommunities is predicted by insect group, latitude, spatial extent, altitudinal range, and dataset properties across multiple drainage basins throughout the world. Second, we assessed the relative roles of environmental and spatial factors in driving variation in assemblage composition within each drainage basin. Our analyses were based on a dataset of 95 stream insect metacommunities from 31 drainage basins distributed around the world. We used dissimilarity-based indices to quantify beta diversity for each metacommunity and, subsequently, regressed beta diversity on insect group, latitude, spatial extent, altitudinal range, and dataset properties (e.g., number of sites and percentage of presences). Within each metacommunity, we used a combination of spatial eigenfunction analyses and partial redundancy analysis to partition variation in assemblage structure into environmental, shared, spatial, and unexplained fractions. We found that dataset properties were more important predictors of beta diversity than ecological and geographical factors across multiple drainage basins. In the within-basin analyses, environmental and spatial variables were generally poor predictors of variation in assemblage composition. Our results revealed deviation from general biodiversity patterns because beta diversity did not show the expected decreasing trend with latitude. Our results also call for reconsideration of just how predictable stream assemblages are along ecological gradients, with implications for environmental assessment and conservation decisions. Our findings may also be applicable to other dynamic systems where predictability is low.en_ZA
dc.description.urihttp://onlinelibrary.wiley.com/doi/10.1002/ece3.1439/full
dc.description.versionPublisher's version
dc.format.extent14 pages
dc.identifier.citationHeino, J. et al. 2015. A comparative analysis reveals weak relationships between ecological factors and beta diversity of stream insect metacommunities at two spatial levels. Ecology and Evolution, 5(6):1235–1248, doi:10.1002/ece3.1439.
dc.identifier.issn2045-7758 (online)
dc.identifier.otherdoi:10.1002/ece3.1439
dc.identifier.urihttp://hdl.handle.net/10019.1/101477
dc.language.isoen_ZAen_ZA
dc.publisherJohn Wiley & Sons Ltd.
dc.rights.holderAuthors retain copyright
dc.subjectInsect populationsen_ZA
dc.subjectBiodiversity conservationen_ZA
dc.subjectInsects -- Variationen_ZA
dc.subjectInsects -- Effect of altitude onen_ZA
dc.titleA comparative analysis reveals weak relationships between ecological factors and beta diversity of stream insect metacommunities at two spatial levelsen_ZA
dc.typeArticleen_ZA
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